The Do Not Disturb feature was added to iOS 6 in order to silence what might otherwise be distracting notifications, like those during a meeting or while sleeping. Users can manually turn Do Not Disturb on or off, or can set a scheduled time for Do Not Disturb to kick in automatically and then reset later. For instance, many users set Do Not Disturb to turn on around bedtime and reset the following day.

However, users discovered on January 1 that Do Not Disturb did not automatically reset as scheduled. Furthermore, after manually resetting, it wouldn't engage as scheduled that evening.

We contacted Apple when the problem still had not sorted itself out on Wednesday morning. A company spokesperson declined to comment specifically on the cause, but instead pointed us to a knowledge base article published on Wednesday afternoon.

According to Apple, "Do Not Disturb scheduling feature will resume normal functionality after January 7, 2013." Until then, iOS 6 users are stuck manually turning Do Not Disturb on or off as needed.